Which animal word links cub, ursine, panda and polar?

Created in New York, which stock index began on May 26, 1896 as an average of just 12 stocks, at 40.94? Credited with writing "Sweet Home Chicago", which "King of the Delta Blues" was said to have learned guitar from the De… The Greek Titan Cronus, son of Uranus, corresponds to which Roman god, whose name was given to a planet? Cruella de Vil is the villainess who kidnaps which title brood? In 1943, U.S. pennies were made of steel coated with which metal, a mineral also essential to the human body? Potassium has which atomic number, also referred to by the rare adjective "decennoval"? Depicted as a snake, Wadd was a pre-Islamic moon god on which peninsula? The Des Moines River flows southeast across which state to join the Mississippi?